[jwi]

Please do a partner check even if your partner has been climbing safely for 40 years.

http://www.rockandice.com/news/2383-john-long-injured-in-groundfall

(I have forgotten to tie back both the figure of 8 and the bowline.  When I forgot to tie the fig of 8 I fell to the ground from 9 m, when I forgot to tie back the bowline the rope fell down when clipping the second bolt, but I could downclimb. I much appreciate when my belayer check my knot before I start climbing.)

[Muenchener]

 

Please do a partner check ... I much appreciate when my belayer check my knot before I start climbing.)

If John Long - and, in a well known similar incident, Lynn Hill - can forget, then so can I.